/* ==========================================================
   MELON SOFTWARE SOLUTIONS — GST BILLING LANDING PAGE
   ========================================================== */

:root {
  --green: #005A2B;
  --green-dark: #003F20;
  --green-light: #EAF5EE;
  --red: #EF2F2F;
  --text: #17221B;
  --bg: #FFFFFF;
  --bg-soft: #F7FAF8;
  --border: #E1EAE4;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 10px 30px rgba(0, 63, 32, 0.08);
  --shadow-lg: 0 20px 50px rgba(0, 63, 32, 0.14);
  --transition: 0.25s ease;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { text-decoration: none; color: inherit; }

ul { list-style: none; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 88px 0; }

.section-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  text-align: center;
  color: var(--green-dark);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-title-left {
  font-size: clamp(26px, 3.6vw, 36px);
  font-weight: 800;
  color: var(--green-dark);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-sub {
  text-align: center;
  max-width: 620px;
  margin: 0 auto 48px;
  color: #4b5a52;
  font-size: 17px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 30px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 15px;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  white-space: nowrap;
}

.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: var(--green);
  color: #fff;
  box-shadow: 0 8px 20px rgba(0, 90, 43, 0.28);
}
.btn-primary:hover { background: var(--green-dark); }

.btn-outline {
  background: transparent;
  color: var(--green);
  border-color: var(--green);
}
.btn-outline:hover { background: var(--green-light); }

.btn-white {
  background: #fff;
  color: var(--green-dark);
}
.btn-white:hover { background: var(--green-light); }

.btn-outline-white {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.6);
}
.btn-outline-white:hover { background: rgba(255,255,255,0.12); }

.btn-sm { padding: 10px 22px; font-size: 14px; }
.btn-full { width: 100%; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 999;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.brand-logo { height: 40px; width: auto; }

.main-nav ul {
  display: flex;
  gap: 30px;
}

.nav-link {
  font-weight: 600;
  font-size: 15px;
  color: var(--text);
  position: relative;
  padding: 6px 0;
  transition: color var(--transition);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  height: 2px; width: 0;
  background: var(--green);
  transition: width var(--transition);
}

.nav-link:hover { color: var(--green); }
.nav-link:hover::after { width: 100%; }

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--green-dark);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(180deg, var(--green-light) 0%, #ffffff 70%);
  padding: 72px 0 60px;
  overflow: hidden;
  position: relative;
}

.hero::before {
  content: "";
  position: absolute;
  top: -120px; right: -120px;
  width: 420px; height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,90,43,0.10), transparent 70%);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 56px;
  align-items: center;
  position: relative;
}

.eyebrow {
  display: inline-block;
  background: var(--green-light);
  color: var(--green);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.04em;
  padding: 8px 16px;
  border-radius: 999px;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(34px, 5vw, 52px);
  line-height: 1.12;
  font-weight: 800;
  color: var(--green-dark);
  letter-spacing: -0.02em;
  margin-bottom: 18px;
}

.hero-sub {
  font-size: 19px;
  font-weight: 700;
  color: var(--green);
  margin-bottom: 14px;
}

.hero-desc {
  font-size: 16px;
  color: #445048;
  max-width: 520px;
  margin-bottom: 30px;
}

.hero-cta {
  display: flex;
  gap: 16px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.hero-checks {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
}

.hero-checks li {
  font-size: 14px;
  font-weight: 700;
  color: var(--green-dark);
}

/* Dashboard mockup */
.dashboard-mock {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
  overflow: hidden;
}

.floating { animation: float 5s ease-in-out infinite; }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.dashboard-mock-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 14px 18px;
  background: var(--green-dark);
}

.dashboard-mock-bar span {
  width: 9px; height: 9px;
  border-radius: 50%;
  background: rgba(255,255,255,0.35);
}

.dashboard-mock-title {
  margin-left: 10px;
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  opacity: 0.85;
}

.dashboard-mock-body { padding: 20px; background: var(--bg-soft); }

.dm-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 14px;
}

.dm-stat {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 10px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.dm-stat-label { font-size: 11px; color: #6b7a71; font-weight: 600; }
.dm-stat-value { font-size: 15px; font-weight: 800; color: var(--green-dark); }
.dm-stat-value.accent { color: var(--red); }

.dm-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 10px;
}

.dm-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px;
}

.dm-card-title {
  display: block;
  font-size: 12px;
  font-weight: 700;
  color: var(--green-dark);
  margin-bottom: 10px;
}

.dm-bars {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  height: 60px;
}

.dm-bars span {
  flex: 1;
  background: linear-gradient(180deg, var(--green), var(--green-dark));
  border-radius: 4px 4px 0 0;
}

.dm-bars.tall { height: 140px; }

.dm-list ul { display: flex; flex-direction: column; gap: 8px; }
.dm-list li {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  font-weight: 600;
  color: #445048;
}
.dm-list li .ok { color: var(--green); }
.dm-list li .pending { color: var(--red); }

.dm-gst-row {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  font-weight: 600;
  color: #445048;
  padding: 5px 0;
  border-bottom: 1px dashed var(--border);
}
.dm-gst-row:last-child { border-bottom: none; }

/* ---------- Trust ---------- */
.trust-section { background: var(--bg-soft); }

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.trust-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 16px;
  box-shadow: var(--shadow);
}

.trust-num {
  display: block;
  font-size: 26px;
  font-weight: 800;
  color: var(--green);
  margin-bottom: 6px;
}

.trust-label { font-size: 14px; color: #4b5a52; font-weight: 600; }

/* ---------- Problem / Solution ---------- */
.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}

.problem-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}

.problem-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }

.problem-icon { font-size: 30px; margin-bottom: 14px; }

.problem-card h3 { font-size: 18px; color: var(--green-dark); margin-bottom: 8px; }
.problem-card p { font-size: 14px; color: #4b5a52; }

.solution-banner {
  background: linear-gradient(135deg, var(--green), var(--green-dark));
  border-radius: var(--radius);
  padding: 36px;
  text-align: center;
  color: #fff;
}

.solution-tag {
  display: inline-block;
  background: rgba(255,255,255,0.15);
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.05em;
  margin-bottom: 14px;
}

.solution-banner p { font-size: 19px; font-weight: 700; max-width: 640px; margin: 0 auto; }

/* ---------- Features ---------- */
.features-section { background: var(--bg-soft); }

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.feature-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 22px;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}

.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }

.feature-icon {
  font-size: 24px;
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  background: var(--green-light);
  border-radius: 12px;
  margin-bottom: 16px;
}

.feature-card h3 { font-size: 16px; color: var(--green-dark); margin-bottom: 8px; }
.feature-card p { font-size: 13.5px; color: #4b5a52; }

/* ---------- GST Billing ---------- */
.gst-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.gst-bullets { margin: 22px 0 30px; display: flex; flex-direction: column; gap: 10px; }
.gst-bullets li { font-weight: 700; color: var(--green-dark); font-size: 15px; }

.invoice-mock {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
  overflow: hidden;
}

.invoice-mock-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--green-dark);
  color: #fff;
  padding: 16px 22px;
}

.invoice-mock-brand { font-weight: 800; font-size: 18px; }

.invoice-mock-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  padding: 20px 22px;
  border-bottom: 1px solid var(--border);
}

.invoice-mock-meta div { display: flex; flex-direction: column; gap: 4px; }
.invoice-mock-meta span { font-size: 11px; color: #6b7a71; font-weight: 600; }
.invoice-mock-meta strong { font-size: 13.5px; color: var(--text); }

.invoice-mock-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.invoice-mock-table th {
  text-align: left;
  background: var(--bg-soft);
  padding: 10px 22px;
  color: #4b5a52;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.invoice-mock-table td {
  padding: 10px 22px;
  border-top: 1px solid var(--border);
}

.invoice-mock-totals {
  padding: 18px 22px 22px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.invoice-mock-totals div {
  display: flex;
  justify-content: space-between;
  font-size: 13.5px;
  color: #4b5a52;
}

.invoice-mock-totals .grand {
  border-top: 1px solid var(--border);
  padding-top: 10px;
  font-weight: 800;
  font-size: 16px;
  color: var(--green-dark);
}

/* ---------- Modules ---------- */
.module-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
}

.module-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px 12px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 700;
  color: var(--green-dark);
  box-shadow: var(--shadow);
  transition: transform var(--transition), background var(--transition);
}

.module-card:hover { transform: translateY(-4px); background: var(--green-light); }

.module-icon { font-size: 22px; }

/* ---------- Business Types ---------- */
.business-section { background: var(--bg-soft); }

.business-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.business-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 16px;
  text-align: center;
  font-weight: 700;
  color: var(--green-dark);
  font-size: 14.5px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  transition: transform var(--transition);
}

.business-card:hover { transform: translateY(-6px); }

.business-icon { font-size: 26px; }

/* ---------- How it works ---------- */
.steps-row {
  display: flex;
  justify-content: space-between;
  position: relative;
  gap: 12px;
}

.steps-row::before {
  content: "";
  position: absolute;
  top: 26px;
  left: 5%;
  right: 5%;
  height: 2px;
  background: var(--border);
  z-index: 0;
}

.step {
  position: relative;
  z-index: 1;
  flex: 1;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

.step-num {
  width: 52px; height: 52px;
  border-radius: 50%;
  background: var(--green);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800;
  font-size: 15px;
  box-shadow: 0 6px 16px rgba(0,90,43,0.3);
}

.step p { font-size: 13.5px; font-weight: 700; color: var(--green-dark); max-width: 140px; }

/* ---------- Reports ---------- */
.reports-section { background: var(--bg-soft); }

.reports-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.analytics-mock {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 26px;
}

.analytics-legend {
  display: flex;
  gap: 20px;
  margin-top: 14px;
  font-size: 12.5px;
  font-weight: 600;
  color: #4b5a52;
}

.dot { width: 9px; height: 9px; border-radius: 50%; display: inline-block; margin-right: 6px; }
.dot-green { background: var(--green); }
.dot-red { background: var(--red); }

.reports-content p { color: #4b5a52; margin-bottom: 24px; font-size: 15.5px; }

.report-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.report-chip {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--green-dark);
}

/* ---------- Why Melon ---------- */
.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.why-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 24px;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}

.why-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }

.why-icon { font-size: 26px; margin-bottom: 14px; }
.why-card h3 { font-size: 17px; color: var(--green-dark); margin-bottom: 8px; }
.why-card p { font-size: 14px; color: #4b5a52; }

/* ---------- Testimonials ---------- */
.testimonial-section { background: var(--bg-soft); }

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.testimonial-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  box-shadow: var(--shadow);
}

.testimonial-card p { font-size: 14.5px; color: #34433a; font-style: italic; margin-bottom: 16px; }
.testimonial-author { font-size: 13px; font-weight: 700; color: var(--green); }

/* ---------- CTA ---------- */
.cta-section {
  background: linear-gradient(135deg, var(--green) 0%, var(--green-dark) 100%);
  padding: 76px 0;
}

.cta-inner { text-align: center; color: #fff; }

.cta-inner h2 { font-size: clamp(26px, 4vw, 36px); font-weight: 800; margin-bottom: 14px; }
.cta-inner p { font-size: 16px; opacity: 0.9; max-width: 560px; margin: 0 auto 30px; }

.cta-buttons { display: flex; gap: 16px; justify-content: center; margin-bottom: 30px; flex-wrap: wrap; }

.cta-contact {
  display: flex;
  justify-content: center;
  gap: 30px;
  flex-wrap: wrap;
  font-size: 14px;
  font-weight: 600;
  opacity: 0.92;
}

/* ---------- FAQ ---------- */
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }

.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 22px;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 15.5px;
  font-weight: 700;
  color: var(--green-dark);
  text-align: left;
  font-family: inherit;
}

.faq-toggle {
  font-size: 20px;
  font-weight: 400;
  color: var(--green);
  transition: transform var(--transition);
  flex-shrink: 0;
  margin-left: 16px;
}

.faq-item.active .faq-toggle { transform: rotate(45deg); }

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition);
  padding: 0 22px;
}

.faq-answer p { padding-bottom: 18px; font-size: 14.5px; color: #4b5a52; }

.faq-item.active .faq-answer { max-height: 260px; }

/* ---------- Contact ---------- */
.contact-section { background: var(--bg-soft); }

.contact-inner {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 56px;
}

.contact-brand { font-weight: 700; color: var(--green); margin-bottom: 18px; font-size: 16px; }

.contact-details { display: flex; flex-direction: column; gap: 12px; font-size: 15px; font-weight: 600; }

.contact-form {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-row { display: flex; flex-direction: column; gap: 6px; }

.form-row label { font-size: 13.5px; font-weight: 700; color: var(--green-dark); }

.form-row input,
.form-row select,
.form-row textarea {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: 14.5px;
  font-family: inherit;
  color: var(--text);
  background: var(--bg-soft);
  transition: border-color var(--transition);
}

.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--green);
  background: #fff;
}

.form-row.invalid input,
.form-row.invalid select,
.form-row.invalid textarea {
  border-color: var(--red);
}

.form-error {
  font-size: 12.5px;
  color: var(--red);
  font-weight: 600;
  min-height: 14px;
}

.form-success {
  text-align: center;
  color: var(--green);
  font-weight: 700;
  font-size: 14.5px;
  background: var(--green-light);
  padding: 12px;
  border-radius: var(--radius-sm);
}

.form-fail {
  text-align: center;
  color: var(--red);
  font-weight: 700;
  font-size: 14.5px;
  background: #fdecec;
  padding: 12px;
  border-radius: var(--radius-sm);
}

/* Honeypot spam trap — hidden from real visitors, visible to bots that ignore CSS */
.hp-field {
  position: absolute;
  left: -9999px;
  top: -9999px;
  opacity: 0;
  pointer-events: none;
}

.btn.is-loading {
  opacity: 0.7;
  cursor: not-allowed;
  pointer-events: none;
}

/* ---------- Footer ---------- */
.site-footer { background: var(--green-dark); color: #fff; padding: 64px 0 0; }

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
}

.footer-logo {
  height: 34px;
  margin-bottom: 16px;
  filter: brightness(0) invert(1);
}

.footer-brand p { font-size: 14px; opacity: 0.75; margin-bottom: 20px; max-width: 280px; }

.footer-social { display: flex; gap: 14px; flex-wrap: wrap; }
.footer-social a {
  font-size: 12.5px;
  font-weight: 700;
  color: #fff;
  opacity: 0.8;
  border: 1px solid rgba(255,255,255,0.25);
  padding: 6px 12px;
  border-radius: 999px;
  transition: opacity var(--transition), background var(--transition);
}
.footer-social a:hover { opacity: 1; background: rgba(255,255,255,0.1); }

.footer-col h4 { font-size: 14.5px; margin-bottom: 18px; opacity: 0.9; }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul li,
.footer-col ul a { font-size: 13.5px; opacity: 0.75; transition: opacity var(--transition); }
.footer-col ul a:hover { opacity: 1; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  opacity: 0.65;
}

/* ---------- Scroll animations ---------- */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .feature-grid { grid-template-columns: repeat(3, 1fr); }
  .module-grid { grid-template-columns: repeat(4, 1fr); }
  .business-grid { grid-template-columns: repeat(3, 1fr); }
  .why-grid, .testimonial-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
  .main-nav { position: fixed; top: 76px; left: 0; right: 0; bottom: 0; background: #fff; padding: 24px; transform: translateX(100%); transition: transform var(--transition); overflow-y: auto; z-index: 998; }
  .main-nav.open { transform: translateX(0); }
  .main-nav ul { flex-direction: column; gap: 4px; }
  .main-nav ul li { border-bottom: 1px solid var(--border); }
  .main-nav ul a { display: block; padding: 16px 4px; }
  .hamburger { display: flex; }
  .header-actions .btn-sm { display: none; }

  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { order: -1; }

  .problem-grid { grid-template-columns: 1fr; }
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .gst-inner, .reports-inner, .contact-inner { grid-template-columns: 1fr; }
  .gst-visual, .reports-visual { order: -1; }

  .steps-row { flex-direction: column; gap: 28px; align-items: flex-start; }
  .steps-row::before { display: none; }
  .step { flex-direction: row; text-align: left; }
  .step p { max-width: none; }
}

@media (max-width: 640px) {
  .section { padding: 60px 0; }
  .dm-stats { grid-template-columns: repeat(2, 1fr); }
  .dm-row { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .module-grid { grid-template-columns: repeat(3, 1fr); }
  .business-grid { grid-template-columns: 1fr 1fr; }
  .why-grid, .testimonial-grid { grid-template-columns: 1fr; }
  .report-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .cta-contact { flex-direction: column; gap: 10px; }
  .hero-cta { flex-direction: column; }
  .hero-cta .btn { width: 100%; }
}